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一年级数学上册第3单元1_5的认识和加减法《减法》课课练新人教版.docx

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1减法1.在里 填“、( )( )( )( )4.我会看图写算式。= =（） （）=（） （） （）=（）（） （）=（） （） （）=（）4 0 1 5 22参考答案1.、=、2.-、-或+、+ + 、-、+、+3.542104.3+2=5 5-4=1 5-4=1 2+2=4 2+3=5 4-1=3

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